840897416 has 8 divisors (see below), whose sum is σ = 1576682670. Its totient is φ = 420448704.

The previous prime is 840897403. The next prime is 840897437. The reversal of 840897416 is 614798048.

It can be written as a sum of positive squares in only one way, i.e., 673194916 + 167702500 = 25946^2 + 12950^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52556081 + ... + 52556096.

Almost surely, 2^840897416 is an apocalyptic number.

It is an amenable number.

840897416 is a deficient number, since it is larger than the sum of its proper divisors (735785254).

840897416 is a wasteful number, since it uses less digits than its factorization.

840897416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105112183 (or 105112179 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 840897416 is about 28998.2312564060. The cubic root of 840897416 is about 943.8746871148.

The spelling of 840897416 in words is "eight hundred forty million, eight hundred ninety-seven thousand, four hundred sixteen".